NPR-Riken Corporation, together with its subsidiaries, manufactures and sells automobile engine parts, marine engine parts, and other products in Japan and internationally. It operates through the Automotive & Industrial Machinery Parts Business and Plumbing & Construction Equipment Business segments. The company offers automotive parts, including piston rings, camshafts, valve seat inserts, cylinder liners, and other parts for internal combustion engines, as well as casting parts for car bodies and seal rings for transmissions. It also provides piston rings used in the main engines for propulsion of large container vessels and seal rings for generator facilities and industrial equipment; piping products for lifelines, disaster prevention systems, and plants; and metal injection molding products. In addition, the company offers thermal engineering products, such as PYROMAX metallic heating element and PYROMAX SUPER ceramic heating element; electromagnetic compatibility products that include anechoic chambers and other products for measuring electromagnetic waves; medical equipment comprising the NiFreeT, a titanium tantalum alloy for bio-implantable devices; and exterior parts for recreational vehicles and infrastructure products that include generators, toilets, and air conditioners. The company was incorporated in 2023 and is headquartered in Tokyo, Japan. NPR-Riken Corporation operates as a subsidiary of Npr-Riken Corporation.